This circuit with two HT2030s powers 6 LEDs in a decorative flashing system. The circuit is from Electronics Now magazine, December 1997. The LEDs are fed in sequence.
This commercial medium and short-wave radio was manufactured in Japan in the 60s. The circuit has...
In the figure we have the way to use the LM3914 as a scale of bar LEDs or moving point. The...
Alternating taps on the pressure switch or sensor, cause the output to alternate the high and low...